package main

import (
	"fmt")

func main()  {
	a:=[]int{2,3,5,1}
	fmt.Println(a)
	a = append(a, 111)
	sum:=0
	for _,num:=range a{
		sum+=num
	}
	fmt.Println(sum)
	fmt.Println(len(a))
	map1:=map[string]int{"china":1,"france":3,"american":7}
	delete(map1, "china")
	for num:=range map1{
		fmt.Println(map1[num])
	}

}
